TF1001A

Data Sheet February 1999 LG1602 Decision Circuit Features s s s s Functional Description The LG1602 is a gallium arsenide (GaAs) decision circuit. It features a sensitive broadband input amplifier and a D-type flip-flop that retimes and regenerates an input data stream that is weakened by noise, jitter, and intersymbol interference. The LG1602 has complementary 50 Ω output buffers. dc feedback ensures input threshold control for input levels as low as 25 mV, when using dc balanced input data. The LG1602 is available in a hermetically sealed 16-lead glass-metal surface-mount package. V+OUT V–OUT Operation up to 3 Gbits/s Good sensitivity to low input signals Low power dissipation Surface-mount package Applications s s s SONET/SDH transmission systems Digital video transmission Digital test instruments V–REF V–IN V+IN V+REF 110 pF 25 kΩ 50 Ω D 50 Ω 25 kΩ 110 pF D Q VSS 2 pF V–CLK 50 Ω 50 Ω V+CLK 2 pF GND 5-7667(F)r.3 Figure 1. LG1602 Functional Diagram LG1602 Decision Circuit Data Sheet February 1999 Pin Information GND GND NC NC 16 15 14 13 1 GND 2 V+CLK 3 V–CLK 4 VSS 12 V+REF 11 V+IN 10 V–IN 9 V–REF 5 6 7 8 V–OUT V+OUT NC NC 12-3223(F).ar.2 Figure 2. Pin Diagram Table 1. Pin Descriptions Pin 2 3 4 5 6 9 10 11 12 1, 15, 16, Package Back 7, 8, 13, 14 Symbol V+CLK V–CLK VSS V–OUT V+OUT V–REF V–IN V+IN V+REF GND Name/Description Clock Input. May be grounded, if not used. Clock Input. May be grounded, if not used. dc Supply Voltage. Negative Data Output. a...